A study in the Biochemical and Biophysical Research Communications has attracted attention because it showed that natto extract, a traditional Japanese food, can prevent Covid19 coronavirus infection. However, before you start eating natto in batches, keep in mind that these findings may only apply to cell clusters in petri dishes or test tubes.
That’s because the research was conducted on cattle and human cells in the laboratory, not on humans or other animals. Remember, what happens in the laboratory cell culture can stay in the laboratory and cell culture. There are many things that work in the laboratory, but they don’t work in humans. Therefore, based on the results of this study, a cup of natto can contain more than 12 grams of salt.
Now start investigating. Teams from the Center for Epidemiology and Infectious Disease Prevention (CEPiR), Tokyo University of Agriculture and Technology, Miyazaki University and the National Institute of Technology (Mami Oba, Wen Rongduo, Akatsuki Saito, Tamaki Okabayashi, Tomoko Yokota, Junko Yasuoka, Yoko Sato, Koji Nishifuji, Hitoshi Wake, Yutaka Nibu, and Tetsuya Mizutani) carried out this research. The research team prepared natto extract, which is produced when soybeans are fermented with Bacillus subtilis. However, instead of putting natto on rice or putting mustard and long onions on it, they applied the extract to cattle and human cells.
Great Japanese Demand for Fermented Soybeans
Natto is made from fermented and steamed soybeans. (Photo courtesy of Koichi Kamoshida / Getty Images) GETTY IMAGES
Severe acute respiratory syndrome Coronavirus 2 (SARSCoV2) and bovine herpes virus 1 (BHV1) are difficult to infect cells when unheated extracts are used. However, when the natto was heated for 10 minutes at 100 ° C for the first time, it no longer appeared to have any effect on any type of virus. The researchers hypothesized that natto extract contains an enzyme called protease, which can break down key proteins on the surface of the virus, allowing the virus to infect cells. Heating the natto extract will break down and inactivate these proteases.
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In fact, the second part of the study seems to confirm this hypothesis. First, the natto extract is treated with a protease inhibitor, that is, a drug that inhibits the activity of the protease, and then the natto extract is inhibited from the ability of the virus to infect cells. I see?
In the third part of the study, the researchers applied natto extract directly to the virus and checked what happened to the protein on the surface of the virus. The extract appears to break down a key part of the SARSCoV2.2 spike protein. The key part of this so-called receptor-binding domain or the notorious RBD is the part that the Covid19 coronavirus uses to trap the cell it is about to invade. These enzymes also appear to be able to break down similar proteins on the surface of BHV1.
Again, if you are just a group of cells in a petri dish or test tube, this is good news. Of course, if this is the case, then you have other problems. For example, you may find it difficult to reply to text messages, post on Instagram, or struggle when invited to speak on the clubhouse stage. However, if you are a human or even a giant squirrel, these findings may not necessarily apply to you.
Natto Bukkake Udon Noodles
Natto Udon Noodles. Um. (Photo: Getty) GETTY
Again, there are many examples showing that it appears to be effective on cells in the laboratory, but ultimately, it is not effective in the human body. First, the conditions between the laboratory and the body can be quite different. Individual cells can resemble individual high school students when separated from their factions, or individuals wearing Viking hats and furs when they are not part of the mob. Individual cells do not always function independently as they are as part of an organ or other part of the body.
Second, even if natto extract works on the cells in your body, it is difficult to deliver enough natto extract to the correct part of your body. Inhaling gallons of natto extract to fill the lungs and respiratory tract with this substance may be impractical or unhealthy. Of course, choking on natto extract can prevent you from contracting the Covid19 coronavirus, because you will die. But death has other problems.
Also, how often do you take natto extract to prevent infection? every day? Hourly? each minute? “Oh, it’s 9:23 PM, and it’s time for my natto extract. Oh wait, it’s 9:24 PM, it’s time to take more natto extract. Well, it looks like it’s 9 o’clock. Overnight now 25 points, which means more natto extract, “can really disrupt appointments or job interviews.”
So overall, this study itself is great evidence for natto, showing that natto is You can use to prevent human infection with Covid19 coronavirus. However, this is the beginning. More scientific research is needed to confirm whether natto can actually prevent the virus from infecting cells, and to determine how this works in real, intact, living animals and humans. Perhaps in the future natto can prove useful or form the basis of new medicines. But without a time machine, the future is not the present.
That doesn’t mean you shouldn’t eat natto. It contains the right amount of fiber, calcium, iron, magnesium, protein, potassium, manganese and vitamins B2, B6, C, E and K. Certainly,

By Peter

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